does anyone know if the jelly bean update will bring google walet to the s3 and if that then mean you can use it to pay on the visa paywave checkouts??????
Yes and yes.
Caveat: Assuming AT&T and Verizon ever bring out JB and IF they don't screw with the code to prevent it.
That said, I use Google Wallet on my S3 all the time. Do a search for Google Wallet via xda forums, after you root your phone.
Merchants who accept Google Wallet include: American Eagle Outfitters, Bloomingdales, Foot Locker, Jamba Juice, Macy's, RadioShack, Subway, The Container Store, Toys "R" Us, Walgreens, 7-Eleven, Best Buy, BP, CVS Pharmacy, Dairy Queen, McDonald's, Office Max, Petco, Sports Authority, Sunoco, The Home Depot, Tim Hortons and other retailers.
NJ Transit also participates with Paypass and Google Wallet. Get it now!